Examination of the Maskell III Blockage Correction Technique for Full Scale Testing in the NRC 9-Meter Wind Tunnel

2012 ◽  
Vol 5 (2) ◽  
pp. 640-649 ◽  
Author(s):  
Jason Leuschen ◽  
Youssef Mébarki
Keyword(s):  
Wind Tunnel ◽  
Full Scale ◽  
Correction Technique ◽  
Blockage Correction ◽  
Full Scale Testing

Pressure Measurements on Yacht Sails: Development of a new system for wind tunnel and full scale testing

2016 ◽  
Author(s):  
Fabio Fossati ◽  
Ilmas Bayati ◽  
Sara Muggiasca ◽  
Ambra Vandone ◽  
Gabriele Campanardi ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
Unsteady Aerodynamics ◽  
Research Field ◽  
Full Scale ◽  
Measuring System ◽  
Windward Side ◽  
Pressure System ◽  
Operational Conditions ◽  
Sailing Yacht ◽  
Full Scale Testing

The paper presents an overview of a joint project developed among Politecnico di Milano, CSEM and North Sails, aiming at developing a new sail pressure measurement system based on MEMS sensors (an excellent compromise between size, performance, costs and operational conditions) and pressure strips and pads technology. These devices were designed and produced to give differential measurement between the leeward and windward side of the sails. The project has been developed within the Lecco Innovation Hub Sailing Yacht Lab, a 10 m length sailing dynamometer which intend to be the reference contemporary full scale measurement device in the sailing yacht engineering research field, to enhance the insight of sail steady and unsteady aerodynamics [1]. The pressure system is described in details as well as the data acquisition process and system metrological validation is provided; furthermore, some results obtained during a wind tunnel campaign carried out at Politecnico di Milano Wind Tunnel, as a benchmark of the whole measuring system for future full scale application, are reported and discussed in details. Moreover, the system configuration for full scale testing, which is still under development, is also described.

AERODYNAMIC FORCE DEDUCTION ON YACHT SAILS USING PRESSURE AND SHAPE MEASUREMENTS IN REAL TIME

2015 ◽  
Vol 157 (B2) ◽  
Author(s):  
D Le Pelley ◽  
D Morris ◽  
P Richards ◽  
D Motta
Keyword(s):  
Wind Tunnel ◽  
Pressure Distribution ◽  
Real Time ◽  
Aerodynamic Force ◽  
Full Scale ◽  
Force Distribution ◽  
Wind Tunnel Tests ◽  
Force Components ◽  
Full Scale Testing

This paper describes a method of deducing aerodynamic force components produced by individual sails. This is achieved by measuring the pressure distribution at a number of discrete locations over the sail and extrapolating these measurements into a distribution across the entire sail surface. The sail shape is measured using the camera-based VSPARS system and the force distribution over the sail surface is then determined. Wind tunnel tests have been conducted to validate the accuracy of the model. Full scale testing has been undertaken to investigate how aerodynamic effects of trimming sails affect yacht performance.

Wind Tunnel to Full Scale Mapping of Winds and Loads for Launch-Vehicle Ground Wind Loads

2021 ◽  
Author(s):  
Thomas G. Ivanco ◽  
Donald F. Keller ◽  
Jennifer L. Pinkerton
Keyword(s):  
Wind Tunnel ◽  
Launch Vehicle ◽  
Full Scale ◽  
Wind Loads
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